1972723 has 4 divisors (see below), whose sum is σ = 1976760. Its totient is φ = 1968688.

The previous prime is 1972721. The next prime is 1972739. The reversal of 1972723 is 3272791.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1972723 - 2¹ = 1972721 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (1972721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1165 + ... + 2302.

It is an arithmetic number, because the mean of its divisors is an integer number (494190).

2^1972723 is an apocalyptic number.

1972723 is a deficient number, since it is larger than the sum of its proper divisors (4037).

1972723 is an equidigital number, since it uses as much as digits as its factorization.

1972723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4036.

The product of its digits is 5292, while the sum is 31.

The square root of 1972723 is about 1404.5365783774. The cubic root of 1972723 is about 125.4167000119.

The spelling of 1972723 in words is "one million, nine hundred seventy-two thousand, seven hundred twenty-three".